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Single Idea 22910

[filed under theme 27. Natural Reality / D. Time / 2. Passage of Time / g. Time's arrow ]

Full Idea

The problem for the causal analysis of temporal asymmetry is to come up with a definition of causation that does not itself rely on the concept of temporal asymmetry.

Gist of Idea

To define time's arrow by causation, we need a timeless definition of causation

Source

Adrian Bardon (Brief History of the Philosophy of Time [2013], 5 'Causal')

Book Ref

Bardon,Adrian: 'Brief History of the Philosophy of Time' [OUP 2013], p.118


A Reaction

This is the point at which my soul cries out 'time is a primitive concept!' Leibniz want to use dependency to define time's arrow, but how do you specify dependency if you don't know which one came first?


The 24 ideas with the same theme [that time seems to have one fixed direction]:

Newtonian mechanics does not distinguish negative from positive values of time [Newton, by Coveney/Highfield]
When one element contains the grounds of the other, the first one is prior in time [Leibniz]
The direction of time is grounded in the direction of causation [Reichenbach, by Ladyman/Ross]
An ordered series can be undirected, but time favours moving from earlier to later [Le Poidevin]
If time's arrow is causal, how can there be non-simultaneous events that are causally unconnected? [Le Poidevin]
Time's arrow is not causal if there is no temporal gap between cause and effect [Le Poidevin]
If time's arrow is psychological then different minds can impose different orders on events [Le Poidevin]
There are Thermodynamic, Psychological and Causal arrows of time [Le Poidevin]
Presumably if time's arrow is thermodynamic then time ends when entropy is complete [Le Poidevin]
If time is thermodynamic then entropy is necessary - but the theory says it is probable [Le Poidevin]
We must explain either the existence of a time direction, or our psychological sense of it [Price,H]
Causation is the power of one property to produce another, and this gives time its direction [Esfeld]
To define time's arrow by causation, we need a timeless definition of causation [Bardon]
We judge memories to be of the past because the events cause the memories [Bardon]
The psychological arrow of time is the direction from our memories to our anticipations [Bardon]
The direction of entropy is probabilistic, not necessary, so cannot be identical to time's arrow [Bardon]
It is arbitrary to reverse time in a more orderly universe, but not in a sub-system of it [Bardon]
Entropy is puzzling, so we may need to build new laws which include time directionality [New Sci.]
Only heat distinguishes past from future [Rovelli]
Static theories cannot account for time's obvious asymmetry, so time must be dynamic [Baron/Miller]
The direction of time is either primitive, or reducible to something else [Baron/Miller]
The kaon does not seem to be time-reversal invariant, unlike the rest of nature [Baron/Miller]
Maybe the past is just the direction of decreasing entropy [Baron/Miller]
We could explain time's direction by causation: past is the direction of causes, future of effects [Baron/Miller]